Ruby multi-line string benchmark

benchmark.rb

require 'benchmark'

iterations = 100_000
store = {'name' => 'Store name', 'host' => 'www.store-url.com'}

Benchmark.bm do |bm|
  bm.report do
    iterations.times do

      "".tap do |code|
        code << "<script type=\"application/ld+json\">"
          code << "{ \"@context\" : \"http://schema.org\","
          code << "\"@type\" : \"WebSite\","
          code << "\"name\" : \"#{store['name']}\","
          code << "\"alternateName\" : \"#{store['name']}\","
          code << "\"url\" : \"http://#{store['host']}/\","
          code << "\"potentialAction\": {"
            code << "\"@type\": \"SearchAction\","
            code << "\"target\": \"http://#{store['host']}/busca?q={q}&referrer=sitelinks_searchbox\","
            code << '"query-input": {'
              code << '"@type": "PropertyValueSpecification",'
              code << '"valueRequired": true,'
              code << '"valueMaxlength": 100,'
              code << '"valueName": "q"'
            code << '}'
          code << "}"
        code << "}"
        code << "</script>"
      end

    end
  end

  bm.report do
    iterations.times do

      code = %{
        <script type="application/ld+json">
          {
            "@context" : "http://schema.org",
            "@type" : "WebSite",
            "name" : "#{store['name']}",
            "alternateName" : "#{store['name']}",
            "url" : "http://#{store['host']}/",
            "potentialAction": {
              "@type": "SearchAction",
              "target": "http://#{store['host']}/busca?q={q}&referrer=sitelinks_searchbox",
              "query-input": {
                "@type": "PropertyValueSpecification",
                "valueRequired": true,
                "valueMaxlength": 100,
                "valueName": "q"
              }"
            }"
          }
        </script>"
      }
      code
    end
  end

  bm.report do
    iterations.times do

      code = "<script type=\"application/ld+json\">" \
          "{ \"@context\" : \"http://schema.org\"," \
          "\"@type\" : \"WebSite\"," \
          "\"name\" : \"#{store['name']}\"," \
          "\"alternateName\" : \"#{store['name']}\"," \
          "\"url\" : \"http://#{store['host']}/\"," \
          "\"potentialAction\": {" \
            "\"@type\": \"SearchAction\"," \
            "\"target\": \"http://#{store['host']}/busca?q={q}&referrer=sitelinks_searchbox\"," \
            '"query-input": {' \
              '"@type": "PropertyValueSpecification",' \
              '"valueRequired": true,' \
              '"valueMaxlength": 100,' \
              '"valueName": "q"' \
            '}'\
          "}" \
        "}" \
      "</script>"
      code
    end
  end


end

result

       user     system      total        real
   0.710000   0.000000   0.710000 (  0.714813) #actual implementation
   0.250000   0.000000   0.250000 (  0.242231) #output with whitespaces (701 chars)
   0.230000   0.000000   0.230000 (  0.236310) #output without whitespaces (433 chars)